/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/SpectatorBeaconClient.h
Response from the host session after making a reservation request
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(Client, Reliable) virtual void ClientReservationResponse ( [ESpectatorReservationResult::Type](API\Plugins\OnlineSubsystemUtils\ESpectatorReservationResult__Typ-) ReservationResponse )